Effect of Core Shape and its Side Slopes on Seepage Quantity of Zoned Earth Dam

Authors

  • Arkan H. Ibrahim Department of Water Resource Engineering, College of Engineering, Salahaddin University, Erbil, Kurdistan Region, Iraq
  • Yaseen W. Aziz Department of Water Resource Engineering, College of Engineering, Salahaddin University, Erbil, Kurdistan Region, Iraq
  • Khalil K. Hamadamin Department of Water Resource Engineering, College of Engineering, Salahaddin University, Erbil, Kurdistan Region, Iraq

Keywords:

Zoned Earth dam, Seepage, Slanting Core

Abstract

Seepage is the main problem of earth dams; most failures are occurred due to excessive amount of
seepage. In zoned earth dams clay core is provided to minimize seepage quantity and its dimensions and
shape has great influence on seepage quantity. In this study seepage through earth dam with vertical and
slanting core case were analyzed for different side slopes and top width. For vertical core cases different
side slopes ranges from 0H:1V to 2H:1V and different top width from (3-10) m were analyzed. Due to lower
permeability coefficient of core material seepage discharge reduced as side slopes and top width increase.
The seepage discharge for slanting core cases are more than vertical cases with similar area of core. The
results obtained in this study are agreed with the results of the other investigators However, in slanting core
cases the downstream part dry during steady state condition; this is helpful in improving downstream
stability

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Published

2023-02-01

Issue

Vol. 12 No. 2 (2022): Vol 12-Issue 2

Section

Articles